Finding the Fourth Proportional to 176,643.21, 243,831.05 and 105,023.07
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Solution
The fourth proportional to 176,643.21, 243,831.05 and 105,023.07 is: 144,969.54
Step by Step Solution
- Step 1: Write the proportion equation
176,643.21 : 243,831.05 = 105,023.07 : x - Step 2: Convert to fraction form
176,643.21/243,831.05 = 105,023.07/x - Step 3: Cross multiply
176,643.21x = 243,831.05 × 105,023.07 - Step 4: Simplify right side
176,643.21x = 25,607,884,907.21 - Step 5: Solve for x
x = 25,607,884,907.21/176,643.21 - Step 6: Final answer
x = 144,969.54
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.